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How to define hash tables in Bash?
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The idea is less about efficiency, more about understand/read-ability for those with a background in perl, python or even bash 4. Allows you to write in a similar fashion.
– Bubnoff
Aug 25 '...
How to append rows to an R data frame
...e approach you want to take.
Original answer
This is really not a good idea, but if you wanted to do it this way, I guess you can try:
for (i in 1:10) {
df <- rbind(df, data.frame(x = i, y = toString(i)))
}
Note that in your code, there is one other problem:
You should use stringsAsFac...
How to compare two Dates without the time portion?
... I don't think that would work, even if converting to Strings was a good idea. The == operator doesn't necessarily return true for equivalent Strings (use equals()). You certainly can't use the other comparison operators you mentioned, either.
– harto
Nov 11 ...
how can I Update top 100 records in sql server
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Any idea how to use the order by as well?
– Joe Phillips
Feb 27 '13 at 18:30
8
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What's the recommended approach to resetting migration history using Django South?
...olution, here is my take on it.
Using manage.py reset south is not a good idea if you have any third party apps that uses South, for example django-cms (basically everything uses South).
reset south will delete all migration history for all apps that you have installed.
Now consider that you upgr...
Are Exceptions in C++ really slow
...ptions (Itanium ABI, VC++ 64 bits) is the Zero-Cost model exceptions.
The idea is that instead of losing time by setting up a guard and explicitly checking for the presence of exceptions everywhere, the compiler generates a side table that maps any point that may throw an exception (Program Counter...
Can't append element
Any idea why the piece of code below does not add the script element to the DOM?
18 Answers
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What are database normal forms and can you give examples? [closed]
...ng but the key, so help me Codd". Ted Codd is the one who came up with the idea of relational databases - things relying on keys, etc., so he would be the authority to go by in the case of relational databases.
– Smashery
Aug 12 '10 at 2:48
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Using the RUN instruction in a Dockerfile with 'source' does not work
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ln -s /bin/bash /bin/sh this is a terrible idea. ubuntu targets /bin/sh to dash for a reason. dash is a fully posix shell which is orders of magnitude faster than bash. linking /bin/sh to bash will drastically reduce your server's performance. cite: wiki.ubuntu.com/Da...
Advantages of std::for_each over for loop
...element is probably not the only thing you want to do, so it can be a good idea to use for_each just so that you learn about find / partition / copy_replace_if and the others, which is what a lot for loops actually do.
– Macke
Jun 8 '12 at 17:52
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